WO1995007063A1

WO1995007063A1 - Absorptive article

Info

Publication number: WO1995007063A1
Application number: PCT/JP1994/001493
Authority: WO
Inventors: Takashi Sawaki
Original assignee: The Procter & Gamble Company
Priority date: 1993-09-09
Filing date: 1994-09-09
Publication date: 1995-03-16
Also published as: KR960704500A; AU7624094A; CA2171179A1; SG64361A1

Abstract

An absorptive article of the invention is such that since barrier cuffs include a plurality of continuous hollow portions and elastic elements provided on free end sides of the hollow portions, an oozing liquid would be blocked by the hollow portions even if the liquid permeated liquid-proof sheets of the barrier cuffs, and so there is a significantly little possibility that any liquid would permeate all the liquid-proof sheets arranged in a plurality of layers to come out from the absorptive article. Thus the absorptive article is highly effective in prevention of leakage.

Description

Clear absorbent product technology

SUMMARY OF THE INVENTION The present invention provides a diaper, sanitary article, incontinence protector that dynamically fits around the wearer's body to prevent leakage of the wearer's waste. Nono ⁰ down Tsu-shaped diapers soil have the disposable evening about the absorbent article of Lee blanking ^ 0

Technology

The water-absorbent article used herein refers to a substance ^π that absorbs and encapsulates bodily exudates, and more specifically, to the body of a wearer. Means an article that can absorb and contain various exudates excreted from the body in the vicinity, and disposable means washing or returning Means that the diaper is not to be used or reused. Also, the diapers used in diapers should be used on the lower torso worn by infants and incontinent persons. Refers to absorbent articles that are worn around, but other disposable absorbent articles such as incontinence briefs, incontinence garments, diaper holders and liners First, it is applied to sanitary garments.

Absorbent articles that are placed in contact with or in close proximity to the wearer to absorb and contain the excrement of the wearer, such as diapers and incontinence briefs. One-piece diapers and diaper holders Which products are there?

The main function of absorbent articles such as disposable diapers and incontinence pliers is to absorb excrement excreted from the wearer by the absorbent core, and to absorb the absorbent core. The excrement contained in the garbage may prevent clothing or other products that come into contact with the wearer, such as bedding, from becoming dirty or wet. Some commonly used disposable diapers include an absorbent body consisting of a topsheet, a backsheet, an absorbent core, and an elastic leg opening. A generally non-stretchable backsheet and a non-stretchable topsheet placed adjacent to the longitudinal edge of the diaper to form the mouth It is made up of such side flaps. Side flaps have cuffs that form a barrier that does not allow liquid to pass through the diaper from the edges of the garment and hold the seal around the wearer's legs. It minimizes gaps and is effective in preventing liquids from seeping or overflowing from wet diapers to clothing that contacts the diaper edges.

Disposable diapers are equipped with an extensible leg floss to improve fluid retention. Each elastic leg hull contains several different embodiments that reduce the leakage of excrement around the leg. Here, the leg force fus is a leg band, a side flap, a no, a lya cuff, or an elastic cuff.

U.S. Pat. No. 3,860,003 includes side flaps and at least one to provide telescopic cuffs (gasket cuffs). The retractable leg opening with two elastic members A disposable diaper is disclosed.

U.S. Pat. Nos. 4,909,803 also disclose rising and standing flaps (Varier cuffs) to improve the retention of the legs. O) Disposable diapers with

Also, U.S. Pat. No. 4,695,278 discloses the use of dual cuffs, including gasket cuffs and barrier cuffs 31. US Pat. Discarded diapers are disclosed.

Disposable absorbent articles, such as diapers, are often made of two types of leg floss, namely, gasket cuffs and bariya cuffs. Or use both. Gasket cuffs are used to close the leg openings of the product around the wearer's legs and to prevent excrement leakage at these openings. It is. For example, U.S. Pat. No. 3,860,003 discloses a diaper having an elastically contractible side flap. U.S. Pat. Nos. 4,333,782 and 4,450,026 also disclose an elastic filter united within the edge of a diaper. A diaper with a muribon is disclosed.

Noriya cuffs are also used to improve the retention of excrement in disposable absorbent articles. For example, U.S. Pat. No. 4,704,115 does not prevent inversion or deployment by not enclosing the wearer's thigh during use. Disposable clothing with side edge leakage prevention groove disclosed Yes. Also, U.S. Pat. No. 4,808,178 discloses a disposable product having an absorbent, liquid-impermeable, leak-resistant flap.

In addition to the foregoing, U.S. Pat. Nos. 4,795,452 disclose a liquid impervious seal, a barrier wall that slows the flow of excreta, and A disposable absorbent article having a force flap member provided with a cantilever flap exhibiting a gasket action is disclosed. Also, U.S. Pat. No. 4,795,454 includes a spacer means disposed at the distal edge and a seal formed at the proximal edge. Disposable absorbent articles are disclosed.

The cuff members installed on disposable absorbent articles are excellent ones that have improved leakage prevention effects, but because the leg force floss comes into direct contact with the user's skin. Because of this, it is necessary to have a soft touch to the skin, and it has the combined properties of having to prevent leakage and leakage. O required

Disclosure of the invention

The purpose of the present invention is to provide an absorbent article that further enhances two main functions, i.e., two important functions, i.e., prevention of leakage and visibility to the skin. ¾ ο

An absorbent article according to the present invention provides an absorbent product having a front west portion, a rear west portion, and a crotch portion, wherein an outer canopy layer and an outer canopy layer are provided. Absorbent contained in the cover layer A core and a cuff member extending outwardly along a longitudinal edge of the absorbent core at least in the crotch area, wherein each of the cuff members comprises: The absorbent core has a fixed end fixed near the longitudinal edge of the absorbent core and a free cuff having a free end contracted by an elastic element; The fuss are formed of a liquid-proof sheet having a plurality of layers, and have a plurality of hollow portions formed continuously between the free end and the fixed end. The elastic element is arranged at a free end side edge of the hollow portion located at least on the free end side of the hollow portion.

Brief description of the drawings

FIG. 1 is a diagram showing an example in which the absorbent article according to the present invention is applied to a disposable diaper.

FIG. 2 is an enlarged sectional view of a main part of the barrier cuff.

BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 is a plan view showing an example in which the absorbent article of the present invention is applied to a disposable diaper, and the disposable diaper shown in FIG. 20 is cut or cut to clarify the structure, and the contraction resulting from the extensibility is stretched out, facing or facing the wearer. The contacting inner surface is located on the upper side.

The disposable diaper 20 shown in FIG. 1 includes a front waist portion 21, a rear waist portion 23, and a crotch portion 25. The overall shape is, for example, a rectangle, an hourglass, or a T-shape. From the absorber 22 in the form of an asymmetric, preferably symmetrically deformed hourglass, and from the front west part 21 and the rear west part 23 of this absorber 22 Outside A pair of side panels 24, 24 extending to the side, leg force flutes 30 arranged around the wearer's legs, and a rear waist part 23 side. It has a fastener 60 provided on the idle panels 24, 24.

As shown in FIG. 2, the absorber 22 includes a liquid permeable top sheet 27, a liquid impermeable back sheet 28, and a top sheet 27. And a backing sheet 28 formed from an absorbent core 29.

As shown in FIG. 1, the top sheet 27 and the back sheet 28 of the absorber 22 have a longer overall length than the absorbent core 29, as shown in FIG. And extends outward beyond the edge 29a of the absorbent core 29 so as to form the outer periphery of the diaper. The topsheet 27, backsheet 28, and absorbent core 29 can be assembled into a variety of known shapes, but the preferred diaper shape is For example, it is described in U.S. Pat. No. 3,860,003.

The absorbent body 22 of the disposable diaper 20 includes at least an absorbent core 29 and preferably an outer casing including a topsheet 27 and a backsheet 28. The disposable diaper 20 is formed from a bar, but when the absorbent core 29 is formed from separate holder and liner forces, the disposable diaper 20 is It is formed from a ruder and a liner. For example, it consists of an absorbent mixture such as a liner topsheet 27, a backsheet 28 and an absorbent core 29. Made from one or more layers of material . Such a disposable diaper 20 may comprise a structure having other shapes added to a single absorbent material to form a composite diaper structure. .

Absorbent core 29 is generally compressible and conformable, does not irritate the wearer's skin, and absorbs and retains urine and other bodily fluids It is made in various sizes and shapes from crushed wood pulp called air filter. The absorbent core 29 has a garment surface and a body surface, as well as a side edge 29a and a waist edge 29b, as shown in FIG.

The shape and structure of the absorbent core 29 also vary. The absorbent core 29 may be made of any other suitable absorbent material, for example, a creped cellulose core, or a melt-produced foam containing a conform. Polymers, chemically cured, denatured or cross-linked cellulosic fibers, tissue wraps and tissue rams Tissue containing the net, absorbent foam, absorbent sponge, superabsorbent polymer, absorbent gelling material, or equivalent material or equivalent These combinations may be used. The shape and structure of the absorbent core 29 can also be varied, for example, the absorbent core 29 can have various carrier areas, hydrophilic groups Includes radiants, superabsorbent radiants, or low-average density and low-average basis weight acquisition areas, or from single-layer or multi-layer structures Become . In addition, the total absorbent capacity of absorbent core 29 is Must be able to handle the load and intended use of the absorbent core.

The size and absorption capacity of 29 will be varied to accommodate wearers in the range from infants to adults. Absorbing structures for use as absorbent cores include, for example, U.S. Pat. Nos. 4,610,678, 4,673,402, It is described in U.S. Patent Nos. 4,888,231 and U.S. Patent No. 4,837,735.

The backsheet 28 is located adjacent to the side of the garment of the absorbent core 29 and is preferably joined by a sticking means known in the art (not shown). It is done. For example, the backsheet 28 may provide a uniform continuous layer of adhesive, a patterned layer of adhesive, or a layer of adhesive to the absorbent core 29. Joined by separate lines, spirals or rows of points. The most suitable adhesive is manufactured by Minnesota, St. Paul, JV Fuller Company, and has the trade name HL — 125 It is commercially available at 8. The application means preferably comprises an open pattern of adhesive network fibers, and is disclosed in US Pat. No. 4,573,986, US Pat. No. 3,911. No. 1,173, U.S. Pat. No. 4,785,996, and U.S. Pat. No. 4,842,666.

Other joining means may be a heat bond, a pressure bond, an ultrasonic bond, a dynamic / mechanical bond, or other known heat bond. There are joining means suitable for the above, or joining means from a combination of these joining means. Sheet 28 is impervious to liquids (eg, urine) and preferably has a thin plastic film force. Although manufactured, other flexible liquid impervious materials may be used. As used herein, flexible refers to a material that is soft and easily conforms to the shape and contour of the wearer. Prevent the liquid absorbed by the towel from wetting the headsheets and underwear that comes into contact with the disposable diaper. Thus, sheet 28 is a woven or non-woven fabric, a polyethylene or polypropylene thermo-flexible film, a polymerized phenol, and the like. Or, it can be a composite material such as a film-coated non-woven fabric. Preferably, the pack sheet 28 is a thermoplastic film having a thickness of about 0.012 mm 0.051 mm.

A particularly preferable material for the backsheet 28 is 1 nT er r e

Includes RR8220 bronze film and RR5475 cast film (Rast) manufactured by Trede gar Ind u s st ri e s, Inc.

The worksheet 28 is preferably embossed and Z or matte finished to give a cloth-like appearance. In addition, the X-Sheet 28 may allow vapors to escape from the absorbent core 29 while preventing the passage of excrement o

The topsheet 27 is located adjacent to the wearer's side of the absorbent core 29, and preferably the absorbent core 29 and It is joined to the backsheet 28 by known joining means (not shown). Suitable coupling means are described in connection with the joining of the backsheet 28 and the absorbent core.

The bond used here is when an element is directly attached to another element by attaching the element directly to the other element. The fixed arrangement and the elements are used to attach the element to an intermediate member that is attached to another element. And placements that are indirectly fixed to other elements. In an embodiment of the invention, the topsheet 27 and the backsheet 28 are located around the diaper by means of coupling (not shown). They are directly joined to each other, or indirectly joined by joining both directly to the absorbent core 29.

The topsheet 27 is conformal, soft and non-irritating to the wearer's skin. In addition, the topsheet 27 is liquid permeable, allowing liquids (eg, urine) to readily penetrate through its thickness. Suitable topsheets 27 include a wide range of materials, such as porous foam, reticulated foam, perforated plastic foil, or natural fibers.

(For example, wood or cotton fiber), synthetic fiber (for example, polyester or polypropylene fiber), or a combination of natural fiber and synthetic fiber. It is a woven or nonwoven fabric that can be combined. Preferably, the topsheet 27 is made of a hydrophobic material to separate the wearer's skin from the liquid in the absorbent core 29. It is made from materials. There are a number of manufacturing techniques that may be used to manufacture the topsheet 27.

Topsheet 27 is made of snow, ° -bonded fiber, carded fiber, wet-laid fiber and meso-plane fiber. It is made by a web of high-central-grade fibers or a combination thereof. The preferred topsheet 27 is a web that has been force dented and heat bonded by means known to those skilled in the art. Preferred topsheets 27 are made of table length polypropylene fibers, for example, Massachusetts, Wonorepore. There is an International Paper Paper Can. It is a textile fiber manufactured under the trademark P-8 by Vratek Incorporation, a subsidiary of Nee.

Here, prior to the description of the barrier cuffs according to the embodiment of the present invention, the general configuration thereof will be described.

A disposable diaper includes at least one leg force flute disposed within each longitudinal edge. Here, the leg strength cuff includes a barrier cuff, a gasket cuff, a combination and a deformation thereof.

In addition, in this specification, the gasket cuff is used to bring any part of the diaper into close contact with the wearer's leg around the wearer's leg. Refers to the diaper part coplanar with the top sheet 27 provided with the means, and the barrier cuff is used to separate from the top sheet 27. It is a leg-powered husk with a means. The gasket cuff and the non-cuff cuff are preferably arranged entirely longitudinally. The structure of a preferred disposable diaper consists of two gasket cuffs and two gasket cuffs located inside the gasket cuffs. It has a rear cuff.

Each gasket cuff has a gasket flap and one or more elastic members. Also, each barrier cuff has a flap portion and a channel portion. The channel portion is a spacer for separating the proximal edge, the distal edge, the edge, and the distal edge of the flap portion from the topsheet. Means and. The proximal edge of the channel portion is bonded to the gasket flap by an adhesive bead. The end of each barrier cuff is secured to the barrier cuff by means of a closure.

The gasket cuff is elastically contractible and is disposed adjacent to the longitudinal edge of the diaper. Preferably, each gasket cuff is positioned adjacent to the barrier cuff so as to pull and hold the diaper toward the wearer's leg. In addition, the gasket cuff should be placed laterally in one of the diaper waist sections to provide a waist cuff. I can do it.

The gasket cuff is any means known in the art for sealing around the wearer's leg. A particularly preferred gasket cuff structure is described in U.S. Pat. No. 3,860,003. And a flexible gasket flap and one or more flap elastic members.

Further, methods and apparatus suitable for the manufacture of disposable diapers having an elastically contractible gasket cuff are described in U.S. Pat.

It is described in 4, 081, 301.

The gasket flap is flexible and contractible, and the elastic member of the flap moves the gasket flap to the leg or cuff of the wearer. Make a gasket cuff around the vest. The gasket flap is a part of the diaper, and more particularly, the longitudinal edge between the diaper edge and the absorbent core edge. The flap portion of the barrier cuff and the backsheet define a gasket flap and surrounds the flap resilient member. In a preferred embodiment, the gasket flap extends outwardly from both edges of the backsheet extension and the absorbent core of the diaper crotch. Formed by the extension of the channel portion of the barrier cuff.

Since the elastic member is operatively connected to the gasket flap in an elastically contracted state, the elastic member is in a non-contracted state and is in a gasket flap. Efficiently push or shrink the tip. The elastic member can be connected to the gasket flap in at least one of two ways. For example, while the gasket flap is in a non-shrink state, the elastic member is stretched and fixed to the gasket flap. Or, use a gasket flap

Three Then, the non-stretched flap elastic member is connected to the contracted gasket flap. In this case, operatively linked refers to the state in which two or more elements interact. The elastic member extends along substantially the entire length of the gasket flap within the crotch area of the diaper. Alternatively, the resilient member can extend the entire length of the diaper or any length to form an elastically contractible gasket cuff, if desired. . The length of the elastic member of the flap is determined by the specific structure of the diaper.

The elastic member is operatively joined to the gasket flap by utilizing the pressure-sensitive characteristics of the elastic member. In this structure, the elastic member is directly joined to the gasket flap.

Also, the elastic member can be operatively joined to the gasket flap via the elastic mounting member. This structure is effective in the case where a laminated material is used for the elastic member. The flap elastic mounting member is preferably flexible and has such an adhesive property that it can be joined to the elastic member in the stretched state. The elastic mounting members are, for example, Elastomer finolem, Polyurethane film, Recycler, Elastic foam, Foam elastic screw. And so on. Preferably, the elastic mounting member is an adhesive bead made of a hot-melt adhesive, and is made of a Wisconsin or an Elm Group. From Findlay Hessian

Four The adhesive sold under the trademark 581 is effective in this case. Alternatively, the elastic member can be bonded to the diaper by various methods such as ultrasonic bonding or hot Z pressure bonding with various adhesive layers.o

The flap elastic member is fixed in the gasket cuff and the knockout sheet 28 by a resilient mounting member like a solid o. Elastic shrinkable gasket cuff is formed by gasket flap and elastic member o

More specifically, the valley cuff is a valley cuff that has a structure that suppresses the excrement flowing along the top sheet and holds the excrement inside the diaper. A

The valley cuff is flexible and preferably has a channel part, a flap part and a spacer means. Flexibility refers to a material that conforms to the shape of the wearer's body and conforms easily to the overall shape and contour of the wearer. The flap portion is the portion of the Valya cuff outside the proximal edge of the channel portion, and the human means is the Valya cuff. The backrest is raised toward the user's crotch, reducing the leakage of excreta through the leg opening. For example, several embodiments can be included: U.S. Patent No. 4,909,803 improves leg spillage prevention in the leg area. Have a falling Ueryoku District Ri Bali ya excitation scan of the eye

5 one The disposable diapers are listed. Also, U.S. Pat. No. 4,695,278 discloses a disposable disposable bag having a double cuff including a gasket cuff and a valya cuff. Mutsu is described. In addition, U.S. Pat. No. 4,704,115 discloses a disposable having an edge leak guard formed to retain the free liquid in the garment. Diapers or incontinence clothing are disclosed.

If the barrier cuff is provided with one or more separating elastic members, the channel formed along the barrier cuff will fit inside the diaper. It is contractible enough to open to hold and hold excrement.

Poly-cuffs are made by Polypropylene, Polyester, Rayon, Nylon, Foam, Plastic Finolum, It can be manufactured from various materials such as molded films and elastic foams. Also, various techniques can be used to produce this barrier cuff. For example, lyrical cuffs may be woven, nonwoven, snow, bonded, carded, or similar webs. Made with

A particularly preferred barrier cuff is formed from a polypropylene which does not include a finished surface to make it impermeable. A suitable polypropylene material is commercially available as Ce1 estra from the Crown's Backpack Company. In a preferred embodiment, the barrier cuff is made of the same member or of the same material as the longitudinally extending gasket cuff.

Hereinafter, the barrier cuff 31 as an embodiment of the present invention will be described in detail.

Basically, this barrier cuff 31 follows the above-described configuration concept, but this barrier cuff 31 has an absorbent core 29 as shown in FIG. It is formed by a liquid-proof sheet 37 having a fixed end 35 fixed to the vicinity of the vertical edge of the base and a free end 33 contracted by an elastic element. The liquid-proof sheet 37 has a plurality of layers, in this embodiment, two layers. The liquid-proof sheet 37 is continuous between the free end 33 and the fixed end 35 via the seal portion 46. The two intermediate parts 39 and 41 are constructed. Elastic elements 43 and 45 are arranged on the side edges of the free ends 33 of the intermediate portions 39 and 41, respectively. In Fig. 2, two middle parts are defined by one seal part 46, but the number of middle parts is increased according to the number of seal parts 46. be able to . If the number of intermediate parts is three or more, the elastic element may be provided at each intermediate part or at several intermediate parts.

That is, in the barrier cuff 31, one sheet of the liquid-proof sheet 37 is folded back to the top sheet 27 side at the free end 33. The end of the liquid-proof sheet 37 turned inward has a layer structure formed by this, and the edge of the top sheet 27 and the upper layer It is sandwiched and joined between the liquid sheets 37. As shown in FIG. 2, the barrier cuff 31 is disposed adjacent to the inner edge of the gasket cuff 50 extending in the longitudinal direction. The folded-back end of the barrier cuff 31 is located below the upper liquid-proof sheet 37, so that the excrement, especially the excrement, is not easily absorbed. Until the stool that tends to float along the push 27 comes into contact with the gasket cuff 50, the channel of the ballya cuff 31 In contact with the parts, the barrier cuff 31 provides an effective double restraint on the flow of waste. Preferably, the fixed end 35 of the barrier cuff 31 is at least at the crotch 25 of the diaper and at the proximal end of the gasket cuff 50. It is located between the edge 29 a of the absorbent core 29.

The free end 33 and the fixed end 35 of the barrier cuff 31 are spaced apart from each other to limit the effective width of the barrier cuff 31. The free end 33 and the fixed end 35 of the barrier cuff 31 are mutually parallel, non-parallel, straight or curved. The barrier cuff 31 can be circular, square, rectangular, or any other cross-sectional shape. The free end 33 and the fixed end 35 are preferably arranged in a parallel linear relationship so as to form a rising barrier cuff 31 preferably having a uniform effective width. .

Since the free end 31 is located closer to the absorbent core 29 than the fixed end 35, the barrier cuff 31 provides a barrier against the flow of excrement. Enable it. The free end 33 of the barrier cuff 31 is connected to the crotch to prevent the free end 33 from reversing. It is held on the inner surface of the topsheet 27 by a closing means (not shown) at a position away from the topsheet 27.

The free end 33 of the luggage 31 should be at least at the crotch 25 of the diaper so that it is separated from the topsheet 27. It is preferred that it not be stuck to other elements of the diaper. The free ends 31 are spaced apart from the top sheet 27 so that the channel cuffs 31 form a channel 55 to increase the capacity of the diaper. It is preferred that In this case, the term “separated” means that the free end 33 is singular to the top sheet 27, including the position close to the top sheet 27. Or an embodiment that occupies more than one location. The distance between the free end 33 and the top sheet 27 should be as long as the free end 33 is far from the top sheet 27 to the maximum distance. Measured along a line drawn from free end 33 to the nearest point of topsheet 27 (ie, when elastically contracted) o

The laryx 31 is preferably hydrophobic and more preferably liquid impermeable to prevent the passage of excrement. The liquid impermeable barrier cuff 31 slows the movement of liquid passing through the barrier cuff 31 and makes the diaper more leak resistant.

The barrier cuff 31 may be processed in a manner known in the art, for example, by selectively processing it or by not processing it. Or separate materials for lya cuff 31 In a preferred embodiment of the disposable diaper 20 which can be made impermeable by fixing the material, a preferred embodiment of the barrier cuff is Numeral 31 is joined to a top sheet 27 that forms the side flapper 56. Here, a joint is defined as a case where the barrier cuff 31 is a separate member that is directly or indirectly attached to the side flap 56. Structure), or the barrier cuff 31 is made of the same material or the same material as the diaper 20 and is continuous with the side flap 56 to create an inseparable element. Case (integrated structure) is included. Alternatively, the rear cuff 31 can be joined to the backsheet 29. In a preferred embodiment, the barrier cuff 31 and the gasket cuff 50 are combined with the power side flap 56. An elastic element 51 is arranged in the gasket cuff 50.

The entire carrier cuff 31 and gasket cuff 50 are preferably composed of a single, separate material strip, with an intermediate segment. The joint is joined to the side flap 56 by a sealing means such as an adhesive to form the fixed end 35 of the barrier cuff 31, and The free end 933 of the fus 31 is formed by being folded back on itself.

Barrier cuff 31 and side flap 56 are joined to each other in any suitable manner. In this case, the joining is defined as that the part of the rear cuff 31 is directly adhered to the top sheet 27 so that the barrier cuff 31 is supported. Id wrap The structure that is directly fixed to the top sheet 27 and the structure in which the interposed member is fixed to the top sheet 27 by fixing the interposed member to the barrier cuff 31. Therefore, the structure in which the barrier force 31 is indirectly joined to the side flap 56 is included.

In a preferred embodiment, the barrier cuffs 31 and side flaps 56 are provided with adhesive or any other attachment means, such as heating. They are joined together by a pressure seal, an ultrasonic seal, or other means known in the art. For example, a uniform continuous layer of adhesive, a patterned layer of adhesive, or a separate line or row of spots of adhesive can be used. Sealing means are preferably manufactured in Tennessee, Kingsport, Eastman * Chemicals Products Some are marketed under the trademark Eastbond A-3 or are available from Onion, Columbus, Century Adhesives. Hot metal adhesives, such as those manufactured and sold under Century 5227 ^ In a preferred embodiment, seals are used The means consist of a non-woven strip surrounding the elastomer adhesive 0

The sealing means for joining the fixed end 35 of the ball cuff 31 to the side flap 56 forms a leakage resistance seal along the fixed end 35, It provides a barrier to liquid seepage through topsheet 27 and ensures that liquid seeps from the "b" of barrier force 31 into the diaper edge. To prevent

Ammunition located in the middle 3 9 4 1 of Valya cuff 31 The sexual elements 43 and 45 separate the free end 33 from the top sheet 27. These resilient elements 43, 45 draw the barrier force floss 31 and cause it to shrink and shorten, or cause the barrier force floss 31 to rise and lift. To form a channel 55 which acts as a barrier against leakage of excrement. Since the elastic elements 4 3 and 45 are fixed to the barrier cuff 31 in an elastically stretched state, the elastic elements 4 3 and 4 5 are in an ordinary unconstrained state. , 45 effectively shrink or move the free end 33 of the barrier cuff 31.

The elastic elements 43, 45 are determined as a whole by the design of the diaper. In the preferred embodiment of FIG. 1, the resilient elements 43, 45 are arranged in the crotch area 25 (the elastic elements 45 are not shown). Extends substantially along its entire length. In the most preferred embodiment, the resilient elements 43, 45 extend beyond the crotch portion 25 to the diaper edge and provide a barrier cuff 31. It is most effectively separated from topsheet 27.

The resilient elements 43, 45 are operatively associated with the barrier cuff 31 by being secured by spaced apart resilient mounting means (not shown). For a detailed description of the method of positioning and securing the elastic elements 43, 45 with respect to the barrier cuff 31, see US Pat. Nos. 4,081,301 and US Pat. It is described in U.S. Patent No. 4,253,461. The number of elastic elements 43, 45 used to make the barrier cuff 31 elastic is It varies according to the number of the middle parts, in which case the elastic element does not have to be arranged in all of the middle parts.

The most suitable elastic elements 4 3, 45 are the pursuits of Purgatory Stuart, East 《Nampton, Lanok, Kannoni. Elastic strains manufactured from natural rubber with a cross-sectional area of 0.18 mmxl.5 mm, marketed under the trademark L — 1900 Rubber Compound. Is. Other suitable resilient elements 43, 45 are trademarks of Load Airland, Middle Tunnel, Fullflex Company and have the trademark Fu1f. This is an elastic member made of natural rubber which is commercially available as 1ex94111. The elastic elements 43, 45 may comprise any heat-shrinkable elastic material known in the art. Other suitable resilient materials include various materials known in the art, such as elastomeric phenol, polyurethane film, elastomeric foam, and the like. And includes a molded elastic screed. In a preferred embodiment, the resilient elements 43, 45 and the resilient mounting means include a Wisconsin, an enolem nose, a finder rail. A 0.5 mm thick extensible adhesive strip marketed under the trademark H2330 as a findlayadhesives from Dohships, Inc. It's a trip.

Furthermore, the elastic elements 43, 45 can take various shapes. For example, the width of the elastic elements 43, 45 can be varied, and a single strand or several parallel or non-parallel strands of elastic material can be used. Or direct It can be linear or curved.

The closing means for fixing the free end 33 on the topsheet 27 produces a comfortable fit for the wearer and also while the diaper is being worn. Prevent the free end 33 from reversing during use and use.Oshi Otsu, R fe, means that the free end 33 located inside rotates outward while wearing the diaper. Say.

Closures are manufactured and traded in Tennessee, Kingsport, Eastman Chemical Chemical Co., Ltd.

East "" Available on the A-3 or by Onyody, Columbus, Sentry Additives, Inc. Hot metal adhesives, such as those manufactured and marketed under the trademark Century 522, but are used in industry such as ultrasonic bonding or heat Z pressure sealing. It is not possible to use other known closures.

The liquid-proof sheet 37 forming the barrier cuff 31 includes a material that delays the liquid permeation rate. A non-woven fabric is used for the material of the liquid-proof sheet 37 in consideration of the fact that the contact with the skin is soft. As the nonwoven fabric, a material obtained by treating fibers to be hydrophobic is preferred as a material of the barrier cuff 31 because of its high liquid-proof property. Further, each layer of the liquid-proof sheet 37, which is a two-layer structure, and the hollow portions 39, 41 may be made of materials having different properties. For example, a non-woven fabric is used as the layer 37 T on the top sheet 27 side of the liquid-proof sheet 37, and the layer 37 B on the contact side with the skin is used. Use hydrophilic non-woven fabric Configuration. In this configuration, the liquid that is about to leak laterally from the top sheet 27 side is covered by the hydrophobic liquid-proof sheet 37 T layer. G is held on the side of the absorbent core 29 or on the side of the absorbent core 29, and a part of the liquid is not discharged to the central area of the absorbent core 29. Even if it reaches the diaper, a hydrophilic layer 37B is provided on that side of the skin to keep the liquid in the barrier cuff 31 The risk of side leakage is much smaller.

In addition, since liquid may enter the barrier cuff 31, absorbent materials are required in the inner spaces of the intermediate sections 39, 41. For example, a tissue, air phenol, etc. can be included.

Further, preferably, the disposable diaper comprises a stretchable waist to improve the feeling of wearing and the holding ability. The elasticated waist area is that part of the disposable diaper that is intended to flexibly expand and contract to strongly adapt to the wearer's est. Or the whole area. The stretchable waist section extends at least one side of the absorbent core at the west end, at least vertically outward, and generally has at least a diaper. Form an edge. The disposable diaper is configured to have two elastic west portions disposed on the west portion. However, the diaper can be composed of a single elastic waist. In addition, the telescopic west or any of its components includes a separate element to be applied to the diaper. The telescopic west section is preferably backsheet 28 or topsheet 27, preferably backsheet 28 and topsheet 28. Configured as an extension of the other elements of the diaper, such as both of Psych 27. The telescopic vest is described in U.S. Patent No. 4,515,595.

The diaper has a shape in which the first and second waist parts are overlapped so that side tension is maintained around the diaper in order to adhere to the wearer. Includes fasteners 60 that form side fasteners to maintain. For example, the fasteners are disclosed in U.S. Pat. Nos. 4,846,815, 4,894,060, U.S. Pat. Nos. 3,848,594 and U.S. Pat. Nos. B14,662,845.

Industrial applicability

The absorbent article of the present invention oozes because the barrier cuff has a plurality of continuous hollow portions and an elastic element is provided at the free end side of the hollow portions. Even if the liquid permeates through the barrier sheet of the barrier cuff, even if the liquid is cut off by the hollow part, all of the liquid-proof sheets of multiple layers are covered by the liquid. It is extremely small when it permeates and oozes out of the absorbent product.

Claims

The scope of the claims

1. In an absorbent product having a front west portion, a rear west portion, and a crotch portion, the absorbent product includes an outer cover layer and an outer cover layer. An absorbent core housed in the cover layer; a cuff member extending outwardly along at least a longitudinal edge of the absorbent core at least in the crotch area; Each cuff member has a fixed end fixed near the longitudinal edge of the absorbent core and a free end which is contracted by an elastic element. A cuff, and the barrier cuff is formed of a liquid-proof sheet having a plurality of layers, and is hollow between the free end and the fixed end. A plurality of hollow portions are formed continuously, and the free edge portion of the hollow portion located at least at the free end side of the plurality of hollow portions Intake Osamusei article characterized that you have placed the elastic element.

2. The absorptive material α port according to claim 1, wherein there are two hollow portions, and an elastic element is arranged at a free edge of each hollow portion.

3. The absorbent article according to claim 1, wherein an elastic element is disposed at a free end side edge of the hollow part located at an intermediate position with three or more hollow parts.

4. The absorbent article according to claim 1, wherein the liquid-proof sheet is characterized in that the inner layer is a nonwoven fabric whose fibers are subjected to hydrophobic treatment, and the outer layer is a hydrophilic nonwoven fabric.

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